We live up by the Canadian border and have the purple martins too I love them too they sure do eat the mosquitoes up here . I built them a large condo birdhouse and it is packed every year holds 12 couples. Have not seen any yet this year but soon . Also get barn swallows and they love to build their nest in my front window under the hang out so I get to see them up close. They also eat lots of bugs. When you live out in country need all the bug eaters you can get.